Fun, Learning, Friendship and Mutual Respect
START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopter Support > 250 Class Electric Helicopters


250 Class Electric Helicopters 250 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.


Reply
 
Thread Tools Display Modes
Old 11-29-2011, 04:52 AM   #1
THX1138
Registered Users
 
Posts: 161
 

Join Date: May 2004
Location: Indianapolis, IN
Default Tail servo ?'s

What is currently the best tail servo for the 250? What about a preferred metal tail servo mount?

Lou
__________________
Time is an illusion. Lunch time, doubley so.
THX1138 is offline        Reply With Quote
Old 11-29-2011, 08:50 AM   #2
JoeW
Registered Users
 
Posts: 1,877
 
My HF Map location
Join Date: Apr 2011
Location: Oakville, ON - CDN
Default

The best is said to be the MKS DS95i. They'll run you about $100, I've never used one though, I've been content with the Align 420.

I use the Align metal mount. It does the job quite well, anything more is just bling. I prefer the metal to the plastic ones, they never move unless you want them to, and I've never had a servo losen up in them either. For $10, I've never had to replace one.
__________________
TRex 250 DFC | TRex 250 DFC (Scale)
2 @ TRex 450 DFC | TRex 450 Pro 3G (Scale)
TRex 550 DFC
DX8 + Telemetery on all
JoeW is offline        Reply With Quote
Old 11-29-2011, 08:57 AM   #3
Silver-techie
Registered Users
 
Posts: 733
 

Join Date: Mar 2011
Location: NE Omaha
Default

^ Ditto.

I hated the plastic ones.
__________________
Erazor 450 (2801 rx) 2750kv | EXI 450 Pro (2702V rx) FBL Tri-Blade head 3500kv AKE | V450 Walkera (2702V rx) 3950kv Turbo ACE 804 | 4F200 & 4F200LM | V200DQ02 & V200D02 | V120D02 & V120D05 | 250 CopterX | 250 EXI FBL | Genius - WK2801
Silver-techie is offline        Reply With Quote
Old 11-29-2011, 10:44 AM   #4
QueadlunnRau
Registered Users
 
Posts: 702
 

Join Date: Dec 2009
Location: Seattle, Wa
Default

I have the Ds95i and can vouch for it's shear awesomeness, I mean titanium solid, metal gears ... shiz is metal gear solid! O.o

But ... she is a porker HEAVY

My stock Ds420 died in less than a dozen flights, I envy those who's have not died yet, I mean seriously who wouldn't want something that says 420!!!! O.o

My next servo was an SG90 ... LOVE these servos everywhere else, but NEVER on a heli tail!

Than I went with the legendary JR Ds290g LOVED this servo when I had my 401B gyro clone, but when I upgraded to a Qwark this servo went quarky. O.o

So if you want the best, most feel the Ds95 or Ds95i, JR 3500.

If you want a good servo that will keep the weight down, get the Ds290g
__________________
Chopper Crew MCX S300, T-Rex 150 DFC, T-Rex 250 DFC, T-Rex 450L Dominator, T-Rex 550e DFC
Retired Crew MCX, MSR, CX2, 4#3B, SR, Nano CP X, mCPX, 130X, HK450PRO TT,
QueadlunnRau is offline        Reply With Quote
Old 11-29-2011, 01:23 PM   #5
petedee
Registered Users
 
Posts: 2,792
 

Join Date: Sep 2011
Location: Canberra, Australia
Default

Also look at the Hitech 8084MG.
__________________
TBS Discovery, TBS Discovery Pro
DX18,14SG
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
petedee is offline        Reply With Quote
Old 11-29-2011, 02:00 PM   #6
mayday1
Registered Users
 

Join Date: Apr 2007
Location: california
Default

Somehow the tail servos of the 250 die quickly. Perhaps that rapid wagging kills them.
My align DS-420 lasted a dozen or so flights before the servo motor completely died (on 5V).
My turnigy ds480 (supposed to be the same as MKS ds480) lasted a couple hundred flights
and the motor also died (also on 5V).

I tried a futaba s9257 briefly, but it was really too big. It didn't fit the servo mount.

Now I'm on a hitec 5084 (about 30 flights), this seems to work the best (with a slight wag when it is windy, but no wag at all when it is calm). We'll see how long it lasts.
mayday1 is offline        Reply With Quote
Old 11-29-2011, 03:20 PM   #7
JoeW
Registered Users
 
Posts: 1,877
 
My HF Map location
Join Date: Apr 2011
Location: Oakville, ON - CDN
Default

Personally, I think, like most things, sometimes you just get a lemon. On the 420s I've had for my 250s, one lasted about 20 flights before it fried, it's replacement is going on just south of 200 flights now. Servos this size are a real crap shoot IMHO. I would hope that if your shelling out $100 each, the MKS better have some great QC.
__________________
TRex 250 DFC | TRex 250 DFC (Scale)
2 @ TRex 450 DFC | TRex 450 Pro 3G (Scale)
TRex 550 DFC
DX8 + Telemetery on all
JoeW is offline        Reply With Quote
Old 11-29-2011, 07:29 PM   #8
BTB
Registered Users
 
Posts: 2,248
 
My HF Map location
Join Date: Jan 2009
Location: Brooklyn, NYC, United States
Default

I have tried the Jr 3500g, Jr290g, and a futaba bls257 on my se. Imo the bls servo was the best out of the three..
__________________
Robert A.
Team HAIYIN
Seaview Rotary Wings
RIP Roman Pirozek Jr.
BTB is offline        Reply With Quote
Old 11-30-2011, 05:01 AM   #9
Bladecpnitro
Registered Users
 
Posts: 2,696
 

Join Date: Mar 2011
Location: Griffin Ga, United States
Default

I've heard folks say that not just any servo will run the higher voltage and last very long. Which servo seems to do the higher voltage the longest?
__________________
DX 7, Trex 550E-MicroBeast-BLS251, EXI 450 FBL GT-5.1 KST 115, Futaba 9257 (!)
Bladecpnitro is offline        Reply With Quote
Old 11-30-2011, 06:10 AM   #10
jfh666
Registered Users
 

Join Date: Jul 2011
Location: Canada
Default

The DS95 is so awsome, its a cyclic servo that i have seen used as a tail servo, they are that great. So the DS95i that is actually made for the tail is just pure gold. Beside the cost, the only draw back is the weith. They are still the best ATM.
jfh666 is offline        Reply With Quote
Old 12-13-2011, 04:41 AM   #11
Bladecpnitro
Registered Users
 
Posts: 2,696
 

Join Date: Mar 2011
Location: Griffin Ga, United States
Default

The MKS DS 95i is a little pricy for me at the moment. I ordered the MKS DS 480 for my HK 250.http://www.amainhobbies.com/product_...-Digital-Servo

I currently have a Quark Clear case gyro and a Blade SR servo on the tail. Its very flyable but I don't feel quite good enough about it to hover inverted. I've done some back flips with it but thats about it.

If you look at the specs on the MKS 480 it is quite fast
  • Operating Speed (4.8V): 0.068 sec/60 degrees at no load
  • Operating Speed (5.0V): 0.065 sec/60 degrees at no load
  • Stall Torque (4.8V): 25.7 oz/in (1.85 kg.cm)
  • Stall Torque (5.0V): 26.8 oz/in (1.93 kg.cm)
and still a very light servo for the 250, plus they give the Working frequency: 1520μs / 333hz which is necessary info to choose the servo type in the Quark servo setup mode. Thats hard info to find sometimes on cheap servos. I never did find it for the Eflite DS75 servo.
__________________
DX 7, Trex 550E-MicroBeast-BLS251, EXI 450 FBL GT-5.1 KST 115, Futaba 9257 (!)
Bladecpnitro is offline        Reply With Quote
Old 12-13-2011, 10:54 AM   #12
QueadlunnRau
Registered Users
 
Posts: 702
 

Join Date: Dec 2009
Location: Seattle, Wa
Default

Those are good specs, plus 9.5g is nice and light.

let me know how that servo works out, I recall someone else had that servo and I'm now a HUGE fan of MKS.
__________________
Chopper Crew MCX S300, T-Rex 150 DFC, T-Rex 250 DFC, T-Rex 450L Dominator, T-Rex 550e DFC
Retired Crew MCX, MSR, CX2, 4#3B, SR, Nano CP X, mCPX, 130X, HK450PRO TT,
QueadlunnRau is offline        Reply With Quote
Old 12-13-2011, 09:39 PM   #13
Bladecpnitro
Registered Users
 
Posts: 2,696
 

Join Date: Mar 2011
Location: Griffin Ga, United States
Default

Quote:
Originally Posted by QueadlunnRau View Post
Those are good specs, plus 9.5g is nice and light.

let me know how that servo works out, I recall someone else had that servo and I'm now a HUGE fan of MKS.

I sure will man. I can't wait to try it out. These shortened day light hours in the winter months sure limit flying time during the week. Most of the time its to dark to fly when I get home.
__________________
DX 7, Trex 550E-MicroBeast-BLS251, EXI 450 FBL GT-5.1 KST 115, Futaba 9257 (!)
Bladecpnitro is offline        Reply With Quote
Old 12-18-2011, 07:33 PM   #14
Bladecpnitro
Registered Users
 
Posts: 2,696
 

Join Date: Mar 2011
Location: Griffin Ga, United States
Default

Quote:
Originally Posted by QueadlunnRau View Post
Those are good specs, plus 9.5g is nice and light.

let me know how that servo works out, I recall someone else had that servo and I'm now a HUGE fan of MKS.
Hey man, the MKS DS480 servo is working great . Im still getting some mild twitching on left circles. I think the HK elbow link has some play in it and needs replacing with an Align link.
__________________
DX 7, Trex 550E-MicroBeast-BLS251, EXI 450 FBL GT-5.1 KST 115, Futaba 9257 (!)
Bladecpnitro is offline        Reply With Quote
Old 12-31-2011, 02:55 PM   #15
floatingwidget
Registered Users
 
Posts: 233
 

Join Date: Jun 2007
Location: Canada
Default

can't decide wich one : Jr 290 or a cyclic servo mks95 or the hitec 5084
__________________
TREX 450 Sport! (MKS all around!), TREX-250 se, Hitec Aurora9 with Optima 7, Dx6i, Phoenix V4, Dji f550
floatingwidget is offline        Reply With Quote
Reply




Unregistered
Go Back   HeliFreak > R/C Helicopter Support > 250 Class Electric Helicopters


250 Class Electric Helicopters 250 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


Copyright © 2004-2011 - William James - Helifreak.com